Comparing first part of the movie and chapter one of "A Clockwork Orange"

The first part of the movie and chapter 1 have some difference. For example, in the movie Alex and his “droogs” are not equally dressed. In the movie they all wear white clothes, but in the book they wear black. Also they differ in the first action they do. We all agree that both text forms start showing the young men in Korova Milkbar, tasting different substances with milk; but after that in the book what they do is attack a “science” man that was walking down the street, but in the movie they attack an old man singing peculiar songs (which is actually in the book happens after attacking and robbing a store). When they prevent a girl from being rapped by another gang, in the movie there is 5 to 4 fight, and in the book was a 6 to 4 fight.

They also have similarity. In both text forms they prevent a girl from being rapped, the young people uses nadsat to talk to each other and to other people, they use baby-talk (baddiwad for bad) and Alex hears a woman singing opera that he enjoys, but his friend makes fun of her singing making Alex get upset.

Obviously, there is a lot of sex-related scenes in both. There is a clear show of nudity, violence and crime in both. But a really interesting thing is that Alex and his “drooguies” in the book are around 15 years old, meanwhile in the movie the are like 18 or 20; making us understand the use of age by the movie director to create a shock absorber in the audience.